How does a PQube3 synchronize with NTP or SNTP protocols?

PQube 3 achieves NTP synchronization by implementing an application under Linux called "NTP". This application requests a time update at an interval whose duration can be set in the configurator from one hour to several days. PQube 3 achieves SNTP synchronization by implementing an application under Linux called "NTPdate". Both of these applications are clients, regularly requesting a time update to a single distant server.